Dentistry – Method or material for testing – treating – restoring – or... – Crown
Patent
1993-10-15
1995-04-04
Berman, Susan W.
Dentistry
Method or material for testing, treating, restoring, or...
Crown
433219, 433215, 522908, 522 90, 522 93, A61C 508, A61C 500
Patent
active
054031885
ABSTRACT:
Dental crowns and bridges are made from thermoplastic molding compositions which are a mixture of thermoplastic material (for example, polycaprolactone), a free-radically polymerizable resin (for example, a urethane diacrylate oligomer), and free-radical initiator (for example, a visible-light cure photoinitiator). The mixture is solid at 38.degree. C., has a melting or softening point that comfortably can be withstood by oral tissues, and can be imprinted with a heat-stable custom shape memory and semi-thermoplastic properties by shaping the composition to a desired shape and then causing or permitting the resin to undergo polymerization.
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Kangas Lani S.
Oxman Joel D.
Ubel, III F. Andrew
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